The cluster listener supports a `max_request_duration` option, and
defaults to 90 seconds. However, this configuration was not being use
when processing grpc requests from the listener. This meant that
requests from worker to controller could hang indefinitely and
contributed to the recently fixed issue with database connections being
stuck in `idle in transaction`.
This commit adds a grpc interceptor that ensures each request has a
deadline set to the max request duration for the listener.
Refs: 29cd7bc9d6
Timothy Messier
a2c529b9d1